Improvement in stop-motions for looms



H. T. 'KENT 8:. S. MOORE.

St0p-M0tio'n for Looms.

N0.169,108. Patentem hzmsm.

UNITED STATES PATENT OEEIcE.

HENRY T. KENT AND SIDNEY MOORE, OF CLIFTON, PENNSYLVANIA.

IMPROVEMENT IN STOP-MOTIONS FOR LOOMS.

Specification forming part of Letters Patent No. 169,] 08, dated October26, 1875; application filed January 30, 1875.

To all whom it may concern:

Be it known that we, HENRY T. KENT and SIDNEY MOORE, of Clifton,Delaware county, Pennsylvania, have invented certain Improvements inStop-Motions for Looms, of which the following is a specification:

reference being had to the accompanying drawing, in which- Figure 1 is avertical section of sufficient of a loom to illustrate our invention;Fig. 2, a plan view of part of the loom, and Fig. 3 a perspective view.I

The opposite side frames A of the loom are connected together by theusual cross-stays, and by the breast-beam B, forming part of theframe-work. D is the driving-shaft, from which the lathe E is operatedthrough the medium of the usual intervening gearing, crankshaft, andconnecting-rods. F is the ordinary spring-lever, to which is connected abelt-shifting arm, G, similar to those of common looms, the leverpassing through a projection, a, on one of the frames, and thisprojection having the usual notch b for retaining the spring-lever whenthe loom is in motion. To the inside of the breast-beam is hung a stop,(1, connected by a rod, 0, to the spring lever, the connection beingsuch that when the said lever is retained by the notch 11, and the loomis in motion, the stop d Will be beyond the range of a projection, f, onthe lathe, and when the said lever is moved from the notch the step willbe directly opposite the said projection. 0n the driving-shaft D are twocams, m m, for operating the bell-crank lever H, which is hung to one ofthe frames, and which carries an adjustable pawl, I, controlled by theweft-forks, in the manner described hereafter, the end of the pawl beingadapted to a shoulder, c', on a bar, J, arranged to slide on the frame,and having a notch for receiving one arm of a lever, K, hung to theinside of the frame, the other arm of the lever bearing against an arm,M, which is hung to the under side of the breast-beam B, and which iscaused to force the spring-lever]? from the notch 12, under thecircumstances explained hereafter. There are two Weft-forks, N, one neareach end of the shuttle-race, the weftforks having their usualfunctions, which are too well known to need descriptiom Each weft-forkis guided at one end by passing through the breast-beam, and isconnected at the opposite end to an arm, P, on a shaft, Q,

.which extends from frame to frame, and has its bearings in the same. Anarm, T, on the said shaft Q is connected by a cord or wire, to, to theabove-mentioned pawl I.

When the loom is in motion, and as long as the weft-thread remainsunbroken,,the springlever F will be retained in the notch b, the stop 0?will be beyond the range of the projection f of the lathe, and the endof the pawl I will be elevated by the weft-thread above the shoulderi onthe sliding bar J, as the lathe moves toward the breast-beam, so thatthe movements of the pawl caused by the.

cams m m on the driving-shaft can have no effect on the said bar. Themoment the weftthread breaks, however, the weft-forks cease to controlthe pawl I, which, coming in contact with the shoulder t of the bar J,moves the latter forward,and the bar, operating through the medium ofthe lever-K and arm M, will force the spring-lever from the notch 12;and this lever, operated by the spring as usual, will be quickly movedoutward, and the driving-belt as quickly changed from the fast to theloose pulley of the driving-shaft. At the same time the stopd will bedepressed, and will instantly arrest the lathe and prevent it frombeating up into the fabric an imperfect, broken thread. This effect willbe produced no matter where the thread is broken; for if the fractureoccurs near either end of the shuttle-race, there is an adjacentweft-fork ready to perform the duty which it owes to the broken threadof releasing the pawl I.

We claim as our invention- The combination, in a loom, of a projection,f, on the lathe, and a stop, 01, arranged upon the frame, connected tothe belt-shifting mechanism, and operated by the latter, whereby.

the stop d is brought into line with the projection f, and prevents themovement of the lathe when the belt is shifted, all substantially as setforth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

HENRY T. KENT. SIDNEY MOORE. Witnesses THOS. KENT, WM. McOoRmcK.

